What is the density of a substance with mass of 418.23g and a volume of 436.2ml

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Which of the following is most likely true about water in chemical solutions?